Optical lens



FIG. 1 is a front elevational view of an optical lens showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a perspective view thereof.

The broken lines in the figures depict portions of the optical Lens that form no part of the claimed design. 

CLAIM The ornamental design for an optical lens, as shown and described. 